2020 DSE 资讯及通讯科技-ICT 真题 答案 详解
2020-05-05序号 | 文件列表 | 说明 | ||
---|---|---|---|---|
1 | 2020-资讯及通讯科技-ICT-answer-zh.pdf | 21 页 | 4.43MB | 答案(中文) |
2 | 2020-资讯及通讯科技-ICT-answer-eng.pdf | 21 页 | 4.53MB | 答案(英文) |
3 | 2020-资讯及通讯科技-ICT-paper1-zh.pdf | 25 页 | 5.29MB | 真题 Paper 1(中文) |
4 | 2020-资讯及通讯科技-ICT-paper1-eng.pdf | 23 页 | 5.02MB | 真题 Paper 1(英文) |
5 | 2020-资讯及通讯科技-ICT-paper2a-zh.pdf | 14 页 | 3.50MB | 真题 Paper 2a(中文) |
6 | 2020-资讯及通讯科技-ICT-paper2b-zh.pdf | 12 页 | 2.43MB | 真题 Paper 2b(中文) |
7 | 2020-资讯及通讯科技-ICT-paper2c-zh.pdf | 14 页 | 5.07MB | 真题 Paper 2c(中文) |
8 | 2020-资讯及通讯科技-ICT-paper2d-zh.pdf | 14 页 | 3.20MB | 真题 Paper 2d(中文) |
9 | 2020-资讯及通讯科技-ICT-paper2a-eng.pdf | 13 页 | 3.31MB | 真题 Paper 2a(英文) |
10 | 2020-资讯及通讯科技-ICT-paper2b-eng.pdf | 11 页 | 2.20MB | 真题 Paper 2b(英文) |
11 | 2020-资讯及通讯科技-ICT-paper2c-eng.pdf | 12 页 | 3.10MB | 真题 Paper 2c(英文) |
12 | 2020-资讯及通讯科技-ICT-paper2d-eng.pdf | 13 页 | 3.00MB | 真题 Paper 2d(英文) |
答案(中文)
卷一(甲部)
题號 答案 题号 答案
1. C(74%) 21. B(79%)
2. D(53%) 22. D(33%)
3. A(78%) 23. B(81%)
4. C(61%) 24. C(91%)
5. D(91%) 25. D(62%)
6. B(79%) 26. B(78%)
7. A(64%) 27. B(83%)
8. B(41%) 28. D(90%)
9. A(39%) 29. C(65%)
10. B(58%) 30. A(69%)
11. D(73%) 31. C(68%)
12. D(73%) 32. B(73%)
13. A(53%) 33. D(75%)
14. A(83%) 34. C(70%)
15. C(47%) 35. D(69%)
16. C(51%) 36. C(68%)
17. B(55%) 37. B(80%)
18. A(60%) 38. D(71%)
19. A(62%) 39. A(84%)
20. D(73%) 40. C(26%)
注:括號內數字為答對百分率。
Provided by dse.life
答案(英文)
Paper 1 (Section A)
Question No. Key Question No. Key
- C (74%) 21. B (79%)
- D (53%) 22. D (33%)
- A (78%) 23. B (81%)
- C (61%) 24. C (91%)
-
D (91%) 25. D (62%)
-
B (79%) 26. B (78%)
- A (64%) 27. B (83%)
- B (41%) 28. D (90%)
- A (39%) 29. C (65%)
-
B (58%) 30. A (69%)
-
D (73%) 31. C (68%)
- D (73%) 32. B (73%)
- A (53%) 33. D (75%)
- A (83%) 34. C (70%)
-
C (47%) 35. D (69%)
-
C (51%) 36. C (68%)
- B (55%) 37. B (80%)
- A (60%) 38. D (71%)
- A (62%) 39. A (84%)
- D (73%) 40. C (26%)
Note: Figures in brackets indicate the percentages of candidates choosing the correct answers.
Provided by dse.life
真题 Paper 1(中文)
2020-DSE 資訊及 通訊科技 卷一 (甲部)
香港考試及評核局 2020年香港中學文憑考試 資訊及通訊科技 試卷一
本試卷必須用中文作答 兩小時完卷(上午八時三十分至上午十時三十分)
考生須知 (一) 本卷分甲、乙两部。 (二) 甲部為多項選擇題,見於本試卷內;乙部的試題另見於試題答題簿內。 (三) 甲部的答案須填寫在多項選擇題的答题紙上,而乙部的答案則須寫在試題答題簿中预留的空位内。考试完毕,甲部的答题纸與乙部的试题答题簿须分别缴交。
甲部的考生须知(多项选择题) (一) 细讀答题纸上的指示,宜布開考後,考生须先於测置位置贴上膠黏線以填上各项所需资料,宜布停筆後,考生下會獲得额外時間貼上膠黏線端。 (二) 試場主任宣布開卷後,考生须检查试题有否缺漏,最後一题之後繼續有「甲部我」字樣。 (三) 本试卷各题估分相等。 (四) 本试卷全部试题均须回答。为使於修正答案,考生宜用HB鉛筆把答案填寫在答题纸上·錯誤答案可用黑淨膠擦將其痕迹擦去。考生须清楚填寫答案,否则因答案未能被辨识而失分。 (五) 每题只可填寫一個答案,若填寫多個答案,則该题不計分。 (六) 答案錯誤,不予扣分。
考试结束不可将试卷带离考场
2020-DSE-ICT 1A-1
真题 Paper 1(英文)
There are 40 questions in this paper. Choose the most suitable answers.
- A Hong Kong identity card number is wrongly entered into a computer system, as shown below:
Original number Wrong input A123456(3) A213456(3)
Which of the following can help detect this error? (1) Range check (2) Input data twice (3) Check digit
A. (1) and (2) only B. (1) and (3) only C. (2) and (3) only D. (1), (2) and (3)
- Which of the following decimal values is equivalent to 1010 0001 in 8-bit two's complement representation?
A. 33 B. -33 C. 95 D. -95
- Amy uses JPG format instead of BMP format when scanning photos. What is/are the possible reason(s) for this?
(1) To decrease the file size of the photos (2) To increase the number of pixels per photo (3) To increase the number of colours displayed
A. (1) only B. (2) only C. (1) and (3) only D. (2) and (3) only
- A company has 30 000 employees. Each employee has a staff number. What is the minimum number of bits required to represent the staff numbers?
A. 5 B. 14 C. 15 D. 32
- Assume that X = 2 and Y = 3. Which of the following Boolean expressions returns TRUE?
A. ((X > Y) AND (Y > 4)) OR (1 > X) B. ((X < Y) AND (Y > 4)) OR (1 > X) C. (X > Y) AND (Y < 4) OR (1 < X) D. (X < Y) AND (Y < 4) OR (1 < X)
2020-DSE-ICT 1A-2
真题 Paper 2a(中文)
2020-DSE 資訊及 通訊科技 卷二(A) 香港考試及評核局 2020年香港中學文憑考試 資訊及通訊科技 試卷二(A) 數據庫 試題答題簿 本試卷必須用中文作答 一小時三十分鐘完卷 (上午十一時十五分至下午十二時四十五分)
考生须知 (一) 宣布開考後,考生須首先在第1頁之適當位置填寫考生編號,並在第1、3、5及7頁之適當位置貼上電腦條碼。 (二) 本試卷全部試題均須回答。答案須寫在本試題答題簿中預留的空位內。不可在各頁邊界以外位置書寫。寫於邊界以外的答案,將不予評閱。 (三) 如有需要,可要求派發補充答题紙。每一張均須填寫考生編號、填寫試題編號方格、貼上電腦條碼,並用繩綁於簿內。 (四) 試場主任宣布停筆後,考生不會獲得額外時間貼上電腦條碼及填寫試題編號方格。 (五) 本試題答題簿末頁附有SQL指令及實體關係圖所採用的符號以供參考。
請在此貼上電腦條碼 考生編號
Provided by dse.life
真题 Paper 2b(中文)
DSE ICT及科技 (B)
香港考試及評核局 2020年香港中學文憑考試
資訊及通訊科技 試卷二(B) 數據通訊及建網 試題答題簿
本試卷必須用中文作答 一小時三十分鐘完卷 (上午十一時十五分至下午十二時四十五分)
考生须知 (一) 宣布開考後,考生須首先在第1頁之適當位置填寫考生編號,並在第1、3、5及7頁之適當位置貼上電腦條碼。 (二) 本試卷全部試題均須回答。答案須寫在本試題答题簿中预留的空位內。不可在各頁邊界以外位置書寫。寫於邊界以外的答案,將不予評閱。 (三) 如有需要,可要求派發補充答题紙。每一張張均須填寫考生編號、填畫試題編號方格、貼上電腦條碼,並用繩綁於簿內。 (四) 試場主任宣布停筆後,考生不會獲得額外時間貼上電腦條碼及填畫試題編號方格。
考生編號
20-DSE-ICT 2B-1 43 A200C02B Provided by dse.life
真题 Paper 2c(中文)
2020-DSE 資訊及 通訊科技 卷二(C)
香港考試及評核局 2020年香港中學文憑考試
資訊及通訊科技 試卷二(C) 多媒體製作及網站建構 試題答題簿
本試卷必須用中文作答 一小時三十分鐘完卷 (上午十一時十五分至下午十二時四十五分)
考生须知 (一) 宣布開考後,考生須首先在第1頁之適當位置填寫考生編號,並在第1、3、5及7頁之適當位置貼上電腦條碼。
(二) 本試卷全部試題均須回答。答案須寫在本試題答題簿中預留的空位內。不可在各頁邊界以外位置書寫。寫於邊界以外的答案,將不予評閱。
(三) 如有需要,可要求派發補充答题紙。每一張張均須填寫考生編號、填畫試題編號方格、貼上電腦條碼,並用繩綁於簿內。
(四) 試場主任宣布停筆後,考生不會獲得額外時間貼上電腦條碼及填畫試題編號方格。
©香港考試及評核局保留版權 Hong Kong Examinations and Assessment Authority All Rights Reserved 2020
2020-DSE-ICT2C-1
請在此貼上電腦條碼
考生编號
A200C02C
Provided by dse.life
真题 Paper 2d(中文)
香港考試及評核局 2020年香港中學文憑考試
資訊及通訊科技 試卷二(D) 軟件開發 試題答題簿
本試卷必須用中文作答 一小時三十分鐘完卷 (上午十一時十五分至下午十二時四十五分)
考生须知 (一) 宣布開考後,考生須首先在第1頁之適當位置填寫考生編號,並在第1、3、5及7頁之適當位置貼上電腦條碼。
(二) 本試卷全部試題均須回答。答案須寫在本試題答题薄中預留的空位內。不可在各頁邊界以外位置書寫。寫於邊界以外的答案,將不予評閱。
(三) 如有需要,可要求派發補充答題紙。每一張紙須填寫考生編號、填寫試題編號方格、貼上電腦條碼,並用繩綁於簿內。
(四) 試場主任宣布停筆後,考生不會獲得額外時間貼上電腦條碼及填寫試題編號方格。
請在此貼上電腦條碼 考生編號
2020-DSE 科及 I科(I) Provided by dse.life
真题 Paper 2a(英文)
Answer all questions.
A company provides a service which allows members to rent and view videos online during a 7-day rental period. The company uses three database tables MEMBER, VIDEO and RENTAL to store information on members, videos and rental respectively.
MEMBER | Field name | Type | Description | Example | |-------------|--------|----------------------------|---------| | MID | Character | Identity code of member | M0023 | | MNAME | Character | Name | Susan Li| | MTYPE | Character | Type of member: | G | | | | G - Gold member | | | | | O - Ordinary member | | | CREDIT | Integer | Credit points | 580 | | JDATE | Date | Date joined | 31/01/2012|
Primary key: MID
VIDEO | Field name | Type | Description | Example | |-------------|--------|----------------------------|---------| | VID | Character | Identity code of video | V08 | | VTITLE | Character | Title of video | Nice Face| | RFEE | Integer | Rental fee for video | 20 |
Primary key: VID
RENTAL | Field name | Type | Description | Example | |-------------|--------|----------------------------|---------| | MID | Character | Identity code of member | M0023 | | VID | Character | Identity code of video | V08 | | RDATE | Date | Date of rental | 18/10/2019|
(a) What is the primary key for RENTAL? _____ (2 marks)
Write SQL statements to complete the following tasks from (b) to (e) below. (b) List the names and identity codes of the Ordinary members who have fewer than 100 credits. ____ (2 marks) (c) Find the total rental fee earned by the video 'Nice Face'. _______ (3 marks)
Provided by dse.life
真题 Paper 2b(英文)
Answer all questions.
Mr Wong designs a smart wristband system for a nursing home. Each elderly person in the nursing home will wear a smart wristband.
Server Receiver Smart wristbands
(a) Mr Wong considers using Bluetooth, Infrared and radio-frequency identification (RFID) for the data transmission between the receiver and smart wristbands. For each of the following applications in the nursing home, suggest one of the three wireless technologies and justify your suggestion.
(i) Synchronising biological readings from the elderly people to the server while they are sleeping
(ii) Counting and identifying the elderly people in the nursing home
(iii) Opening the door of a bedroom
真题 Paper 2c(英文)
John produces video files with the following specifications:
Video part Resolution 1920 x 1080 Colour depth 24-bit true colour Frame rate 24 fps Bit rate 8 Mbps Duration 2 hours
Audio part Sampling rate 44.1kHz Sample size 16 bits Channel Stereo Bit rate 192 kbps Duration 2 hours
(a) (i) Estimate the uncompressed file size of the video part in GB. Show your calculation.
(ii) Estimate the uncompressed file size of the audio part in GB. Show your calculation. (2 marks)
(b) John can use the following modes to record a video: Mode 1 Mode 2 Mode 3 Mode 4 Mode 5 Resolution 1920 × 1080 1920 × 1080 1920 × 1080 3840 × 2160 3840 × 2160 Colour depth (bit) 30 12 30 48 30 Frame rate (fps) 24 30 30 30 60
Suggest the best mode for each of the following situations.
Situation Mode Record a video involving fast moving objects Best display quality of still images captured from the video Smallest video file size (3 marks)
Provided by dse.life
真题 Paper 2d(英文)
Answer all questions.
- Tom develops a mobile application for controlling a toy car, shown at position (X,Y) on the map below. The car is at (1,3) heading north:
Tom creates the following: | Variable/Subprogram | Description | |---------------------|-------------| | dir | An integer variable for storing the direction the car is heading in: 0 = North 1 = East 2 = South 3 = West | | MF | A subprogram that moves the car forward 1 unit. | | TR | A subprogram that turns the car clockwise by 90 degrees. |
For example, the initial position of the car is (1,3) and dir = 0. After executing MF, MF, TR, MF, the final position of the car will be (2,5) and dir = 1.
Provided by dse.life